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Thread: check gauges light

  1. #1
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    Default check gauges light

    the fuel gauge on my 99 c5 stoped working and the check gauges light is on. is there a way to program it away?

  2. #2
    Joe (Moderator) joecar's Avatar
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    There is not.

    Do you have the GM SM for this car...?

  3. #3
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    what is "sm"?

  4. #4
    Joe (Moderator) joecar's Avatar
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    Service Manual.

    ~ by phone ~

  5. #5
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    i dont have a service manual. there are no codes, btw.

    "by phone"? do you want me to call you? where?

    edit: well, you probably sent it from your phone, right?
    Last edited by dian; April 15th, 2017 at 04:52 AM.

  6. #6
    Joe (Moderator) joecar's Avatar
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    Yes, by phone, that's the signature that the Tapatalk app adds (I cut it down from ~ sent from my LGMS345 smartphone ~)

  7. #7
    Joe (Moderator) joecar's Avatar
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    For this issue you will need the GM SM to troubleshoot the IPC (dash) module.

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    so i have been to the dealer and the sm procedure seems to be to drop the tanks, start replacing the sensors and probably everything else on the way to the gage. the gage itself is probably fine, it moves when ign. is switched on. he even said gm didnt supply any voltage specs for the sensors, so hes not interessted in the fact that i log them and they seem to work. well, this might be the end of the c5, as an inspection is comming up shortly and i wont pass with the check gages light on.

    any ideas anybody?
    Last edited by dian; April 22nd, 2017 at 11:34 PM.

  9. #9
    Joe (Moderator) joecar's Avatar
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    Let me check to see what C5 diagnostics material I have, I'll get back to you...

    ( smog inspection should be ok with "Check Gauges" or "Service Vehicle" )

  10. #10
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    i will greatly appreciate any assistance.

    you are absolutely right, it will pass with light on, but this will draw the inspectors attention to the gauge and car will not pass with fuel gauge not working.

    its confusing there are no codes (only failed maf). i had the dealer check with his tech 2 as well.

    (the forum seems to be pretty deserted nowadays.)

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